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{ "id": 22896, "url": "https://patchwork.libcamera.org/api/covers/22896/?format=api", "web_url": "https://patchwork.libcamera.org/cover/22896/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20250228125600.3241397-1-stefan.klug@ideasonboard.com>", "date": "2025-02-28T12:55:52", "name": "[0/3] rkisp1: Reduce oscillations on startup", "submitter": { "id": 184, "url": "https://patchwork.libcamera.org/api/people/184/?format=api", "name": "Stefan Klug", "email": "stefan.klug@ideasonboard.com" }, "mbox": "https://patchwork.libcamera.org/cover/22896/mbox/", "series": [ { "id": 5029, "url": "https://patchwork.libcamera.org/api/series/5029/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5029", "date": "2025-02-28T12:55:52", "name": "rkisp1: Reduce oscillations on startup", "version": 1, "mbox": "https://patchwork.libcamera.org/series/5029/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/22896/comments/", "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 1CF2DC3259\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 28 Feb 2025 12:56:09 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id E7E6B68775;\n\tFri, 28 Feb 2025 13:56:07 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id D81D161853\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 28 Feb 2025 13:56:05 +0100 (CET)", "from ideasonboard.com (unknown\n\t[IPv6:2a00:6020:448c:6c00:a7e:b81b:5754:579])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 74A34606;\n\tFri, 28 Feb 2025 13:54:36 +0100 (CET)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"dbm3rzXU\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1740747276;\n\tbh=jWn9X9awEk1Fp1gGtAHf2JFzduoGI/fYlwvNx4EtB+o=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=dbm3rzXUvYaSQfKmG9l1SUQ1FTEZ8gpL2ay4J3Tj0ACD7hyQLqeVDbO06wcelL8p1\n\tqq1aBl0YmaveNPwrePWGST6BfBaV4laxf+vrh+NZo4ZTyDYD4rPcJTMVGHnz/oKVYO\n\t72NdAUk3C2xHhX/LjDAhXhuYlrndhFbAdow8CgyA=", "From": "Stefan Klug <stefan.klug@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Stefan Klug <stefan.klug@ideasonboard.com>", "Subject": "[PATCH 0/3] rkisp1: Reduce oscillations on startup", "Date": "Fri, 28 Feb 2025 13:55:52 +0100", "Message-ID": "<20250228125600.3241397-1-stefan.klug@ideasonboard.com>", "X-Mailer": "git-send-email 2.43.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi all,\n\nThis tiny series further reduces startup AE oscillations on rkisp1.\nWhile analyzing the issue it got clear that the regulation had to cope\nwith images that had an exposure value of 0 which should not happen in\nfirst place.\n\nPatch 1 adds a log message that could help debug such ill behavior.\nPatch 2 add error handling for the exposurevalue == 0 case.\nPatch 3 fixes it for rkisp1.\n\nPlease see the individual patches for the technical details.\n\nBest regards,\nStefan\n\nStefan Klug (3):\n ipa: rkisp1: Add debug log for the sensor controls being set\n ipa: libipa: agc_mean_luminance: Error out when effectiveExposureValue\n is zero\n ipa: rksip1: Remove setControls(0) to reduce startup oscillations\n\n src/ipa/libipa/agc_mean_luminance.cpp | 7 +++++++\n src/ipa/rkisp1/rkisp1.cpp | 7 +++++--\n 2 files changed, 12 insertions(+), 2 deletions(-)" }